Re: need help in bind9 setup

In article <d36qlh$2hn9$1@sf1.isc.org>,
Chiang Seng Chang <cs@ctzen.com> wrote:

> Hi,
>
> I have a colo machine with 1 ip address and several domain names, I need
> to confirm that I am setting up bind9 correctly. (note. not using actual
> machine name and ip).
>
> name of server: foo.dom-a.com
>
> domains: dom-a.com, dom-b.com
>
> named.conf (the interesting part):
>
> zone "." {
> type hint;
> file "named.root";
> };
>
> zone "dom-a.com" in {
> type master;
> file "master/db.dom-a.com";
> allow-query { any; };
> };
>
> zone "dom-b.com" in {
> type master;
> file "master/db.dom-b.com";
> allow-query { any; };
> };
>
>
> db.dom-a.com:
>
> $TTL 86400
> dom-a.com. IN SOA ns hostmaster (...omitted...)
> IN NS ns

NS records must point to A records, not CNAME records.

You should also have at least 2 nameservers for a zone.

> IN MX 10 mail

MX records must point to A records, not CNAME records.

> @ IN A 1.2.3.4
> localhost IN A 127.0.0.1
> ns IN CNAME @
> mail IN CNAME @
> www IN CNAME @
> foo IN CNAME @
>
>
> db.dom-b.com:
>
> $TTL 86400
> dom-b.com. IN SOA ns hostmaster (...omitted...)
> IN NS ns
> IN MX 10 mail

Same as above -- these both must point to A records, and you should have
two NSes.

> @ IN A 1.2.3.4 ; SAME IP AS dom-a.com
> localhost IN A 127.0.0.1
> ns IN CNAME @
> mail IN CNAME @
> www IN CNAME @
>
>
> notes:
>
> 1. dom-a has an extra host foo
> 2. there is only 1 ip address
>
>
> Question #2: how do I set up the reverse lookup zone file ?
>
> Obviously the colo is not going to give me a subnet, in fact there is
> only 1 ip. In this case, do I just setup a
>
> zone "3.2.1.in-addr.arpa"
>
> and a
>
> 4 IN PTR foo.dom-a.com.
>
> ?

No, you should set up

zone "4.3.2.1.in-addr.arpa"

and it should contain

@ IN PTR foo.dom-a.com.

The colo center will have to delegate this reverse zone to your server.

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***